18689972

素因数分解:

$2^2\times 7^2\times {\mathrm{167}}^1\times {\mathrm{571}}^1$

素因数の和:756

約数の個数: 36

約数和(自身を含む): 38342304

約数和(自身を除く): 19652332

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 167, 196, 334, 571, 668, 1142, 1169, 2284, 2338, 3997, 4676, 7994, 8183, 15988, 16366, 27979, 32732, 55958, 95357, 111916, 190714, 381428, 667499, 1334998, 2669996, 4672493, 9344986, 18689972]

約数ペア:

[(1, 18689972), (2, 9344986), (4, 4672493), (7, 2669996), (14, 1334998), (28, 667499), (49, 381428), (98, 190714), (167, 111916), (196, 95357), (334, 55958), (571, 32732), (668, 27979), (1142, 16366), (1169, 15988), (2284, 8183), (2338, 7994), (3997, 4676)]